9.7 Replacing a Fire Extinguisher Cylinder (With a
Lithium Battery Side Cabinet)
Prerequisites
●
Tools: insulated socket wrench, insulation gloves, Phillips screwdriver, key to
the cabinet door, torque wrench, pipe cutter, and pipe holder
●
Materials:
–
Check the fire extinguisher cylinder and all components for any damage,
abrasion, or corrosion. If there is any visible abrasion or corrosion, replace
the damaged components and all corroded components.
–
Check that the valve is closed (vertical to the cylinder).
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Recommended extinguishant: heptafluoropropane or perfluorohexanone
NO TICE
Before the replacement, ensure that the load services are not affected or
obtain written consent from the customer.
Procedure
Step 1 Check the new fire extinguisher cylinder.
●
Check that the valve is closed (vertical to the cylinder).
●
Check that the reading of the pressure gauge on the fire extinguisher cylinder
is greater than 1.1 MPa.
Step 2 Open the front door of the SmartLi cabinet and switch off the battery circuit
breaker. Press and hold the POWER ON/OFF button on the BCU for more than 5s
to power off the cabinet.
Step 3 Remove the front door panel of the lithium battery side cabinet and the
positioning kit, close the valve, reinstall the positioning kit, and secure it.
SmartLi 2.0
User Manual
9 Parts Replacement
Issue 09 (2022-01-30)
Copyright © Huawei Technologies Co., Ltd.
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